Collins English Dictionaryadjective1. used as an affectionate way of addressing someone ⇒ Dearest Paul, ⇒ Dearest Maria, ⇒ Dearest Maria, aren't I terrible, not coming back like I promised?2. most cherished ⇒ It is my dearest hope that one day she will find the happiness she deserves., ⇒ his dearest wish was to see you two married, ⇒ My dearest wish is that this family feud should be forgotten.noun3. used as a very affectionate form of address ⇒ Dearest, can I be of any assistance?, ⇒ What's wrong, my dearest? You look tired.